Bailer



E. F. WESTALL BAILER Filed Nov. 22, 1955 Nov. 23, 1937.

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Patented Nov. 23, 1937 UNITED s-'rA'rEs amsn PATENT OFFICE sanranwwtmnmbraodu. I Y am ummm zz, lass.' sei-m Nn. 51m: I

1s cum. (ci. ics-1s) i This invention relates to vacuum ballets adapted for the removal of drlllings, mud, sand or miscellaneous accumulated detritus at the bottom of a well hole or casing.

Bailers of the prior'art, such as those adapte for operation by impact against the hole bottom and those incorporating a pump cylinder to draw material into their bucket by raising an outer telescoping cylinderor piston are ineiilcient and 1 wasteful of both time and energy due to the fact that the force of the impact of the bucket can seldom be great enough, without risk of damage, to embed the mouth of the bucket into the heavier material attempted to be recovered. As a result, 15 subsequent suction created by the upward movement of any part of the bailer is only operative on the more fluent material and frequent repetition of the operation is required to recover the heavier and consequently more objectionable debris. ,f zo It is an object of the present invention to iill the bucket hereof by the impact of its precipitation against the material, augmented by the creation of suction in the bucket initiated by the img5 pact, and to thus embed the mouth of the bucket into the material being recovered for further action.V l f yAnother object is to create suction in the bucket of a bailer after the-mouth of the bucket has 30 been firmly established in the material, and also during withdrawal of the device therefrom to insure a capacity load in one contact.

Other objects and corresponding advantages will be obvious from an examination of the fol- 35 lowing description and drawing, in which: I

' Fig. 1 is a sectional view of my invention with the pump cylinder beginning its downward stroke; Fig. 2 is a section similar to Pig. l, contrasting the -position of valves relative therewith at the 40 beginning of the upward stroke of the cylinder.

Referring to the drawing in detail, the numerals of which indicate similar parts throughout the several views, 5 designates a c ylinder which comprises the body of a bucket having an inverted 45 V-shaped lower end or mouth 5. An annular valve insert 1 is secured by rivets 8 or the like -within the mouth of the cylinder, to which a mounting 5 for a. flap valve I0 is secured. Valve I hinged to mounting Brabove the insert 'I per- 50 mits material to enter the bucket 5 but prevents its egress. A pipe II, preferably diametrically smallerthan cylinder 5, is secured axially above said cylinder by a reducing coupling I2, tc which both rod and pipe are threaded. A piston I3, 55 secured to the upper end of pipe I I, by well known means, is adapted for sliding engagement within a cylinder I4, which is maintained in axial alignment with pipe II by a reducing coupling I5 threaded to the lower end of cylinder Il and slidably encirclingsaid pipe II.

An internally-threaded annular boss It is pro-- vided integral with coupling I5 into which a -gland I1 is threaded to compress packing I8 and preserve suction within the cylinder Il below the piston. g'

At the opposite upper end of cylinder I4 a bail I9 is provided for attachment to a drllling'llne or the like (not shown). The upper end of cylinder .Il is closed by a standing valve 20 which permits the release of compression caused by the relative upwardrmovement of the piston. A stud 2 I4 weld# .ed or otherwise secured to the top of pistoni" provides support for iiap valve 22 which is hinged thereto 'and adapted to close the opening in the pipe II upon compression of the iiuidwithin the -cylinder above the piston. A port 23 in pipe II below the piston is provided with an annular boss 24 which furnishes a flat seat for a flap valve- 25. .Valve 25 is hinged to a stud 26- mounted, on pipe II adjacent the port, by well known means. A 25 port 21 through the wall of the lower end ofcyli inder I4 is provided with a spring valve 25, riveted or otherwise secured to the wall of the cylinder, through which pressureis relieved on the relative downward stroke of the piston. ,o

As above noted, the device is loweredv intov the well on a wire or manila line, with the cylinder VI 4 suspending the piston and bucket. The bucket is then dropped against the bottom oi the 'well hole, causing the loose' drillings, sand, 'andi the 35 like, to be forced into the mouth thereof. The

Adownward movement of the piston, being secured with the bucket, is abruptly stopped, and the cylinder continues to drop relative thereto, causing expansion of the chamber below the piston within 40 the cylinder. The suction thus created opens the valve 25 in pipe II and closes valve 28 in the cylinder, drawing the material adjacent the mouth of the bucket therein. Fluid pressure above the piston during its relative upward stroke is relieved through the standing valve 20.

Upon completion of its downward stroke, the cylinder is raised by the drilling line, causing reversalof the movement between piston I3 and the cylinder. The expansion of the chamber above the piston will permit the standing valve 20 to close and cause suction to. raisevalve 22 and close valve 25. Pressure iiuid in the cylinder below the piston is then released throughvalve 28. Thus any relative movement of the piston and cylinder will cause upward displacement of the uid within the bucket. Line 35 (Fig.J 1) indicates, for example,Y the level oi material in the bailer caused by the impact of mouth 6 with the material, and 3i (Fig. 2) the higher level upon completion of the downward stroke of the cylinder. The bailer may then be completely lled on the upward stroke of the cylinder.

By employing a pump cylinder longerthan cylinder l, the fluid displacement therein will be greater than the capacity oi the bucket and thus insure lling the bucket with a minimum of` strokes.

Conventional means for emptying the bucketv upon withdrawal of the device from the well comprises a collar 3|, rotatably encircling the lower end of the bucket above valve insert I between an annular guide 30, welded or otherwise secured to cylinder 5 above the collar, and member 32 which forms the mouth i of the cylinder.v A hole nin collar 3i may thus be brought into registry with a'port I4 -in cylinder 5 by rotation and the bucketl drained pf its contents, as is well known.

It willbe obvious to those oi' skill in this art that springs of any well known type may be employed to maintain anyor all of the valves in closed position; that various changes lmay be made in size or type of the valves, relative shape and size of cylinders, as well as in the specific shape of the mouth of the bailer, without .departing from the spirit of my invention.

, Having described my invention, I claim: 1. In a well bailer, a cylinder, a piston reciprocable within said cylinder, said cylinder being adapted to be raised and lowered relative to'said piston,` valvular means connected with1the ends of said ,cylinder to release pressure fluid within the cylinder, a, conduit fromthe Vrchamberson opposite sides of said piston within said cylinder to a bailer bucket, and valvular means controlling said conduit adapted to open to suction and close to pressure within the cylinder.

2. In a wellbailer, a cylinder, a piston reciprocale within said cylinder, valvular means connected with the ends of said cylinder to release pressure iiuid within the cylinder, a conduit from the chambers onl opposite `sides of said piston within said cylinder to a bailer bucket, and valvular means controlling said conduit adaptedv to open to suctionandclose to pressure within lthe,

cylinder. f c

3. In a well bailer. a bucket, a'pipe connected with said bucket, a piston connected with said pipe, a cylinder, said pistonbeing slidable within said cylinder. ports to communicate said pipe with-the chambers on both sides of the piston in the cylinder, andvalvular means controlling said ports adapted to open to suction and close to pressure within' the cylinder.

4. In a well bailer. a cylinder and piston adapted i'or relative reciprocation, having valvular means to relieve pressure within said cylinder on opposite sides oi' the piston Vbut preserve suction, a bailer bucket, and means to communicate suc'- tion, alternately created on opposite sides oi' the piston, during relative reciprocation oi said piston and cylinder, to said bucket.

5. In a well bailer, a bucket.' a pipe connectedy Withsaid bucket, val piston connected with said pipe, a cylinder, said piston being slidable within said cylinder, ports to communicate said pipe with the chambers on both sides of the piston in the cylinder, valvular means controlling said ports adapted to open to suction and close to pressure within the cylinder, and an inlet valve in the lower end of said bucket to close by pressure from within said bucket.

6. In a well bailer, a. cylinder and piston adapted for relative reciprocation having valvular means on opposite sides ofthe piston .in said cylinder to vrelievepressure but preserve suction therein, a bailer bucket, and means to communi- .cate suction fron. said cylinder during each stroke of Athe piston to said bucket."

' 7. In a well bailer, a bailer bucket, a vacuum pump slidably connected with said bucket adapted to create al partial vacuum in said bucket by precipitation of theV bucket against the matter to be bailed and to further create suction by the elevation of the pump with respect to said bucket. 8. In a well bailer, a ybailer bucket, a'vacuum pump slidably connected with said bucket adapted to create a partial .acuum-inv said bucketr by precipitation of the bucket against matter to-be bailed, and to further create suction by the ele'- vation of said pump with respect to said bucket. and means to communicate suction created by said vacuum pump to said bucket.

9. In a well bailer, a pump body, ay piston reciprocably disposed in said pump body, ports in said lpump body atopposite sides of the` piston to `relieve pressure therein, a bailer bucket connected to said pump body, and means to corinne suction created in said pump body`on` each relative stroke of the piston to said bucket. l0. In a well bailer, a vacuum pump comprising a pump body and a reciprocable piston, a bailer bucket, connecting means between the pump and bucket, and means connectedto the end oi' said pump to permit its being raised or lowered, said pump being adaptedito create a partial vacuum by both the relative convergence and separation ofthe bucket and said last-mentioned means, and means to conilne the suction create'd in said pump body by the relative convergence of said bucket andsaid means for raising and lowering said pump to said bucket.

. 1l. In a well bailer, al bailer bucket, a pump connected to said bailer bucket comprisinga barrel having aV plunger therein, means to'commu'- nicatev suction created at oppositevsides oi' the plunger by relative reciprocation of the barrel and plunger with said bucket, and means to close said means to pressure created on either side of i said plunger.

l12. In a well bailer, a bailer bucket having Aa valve in its lower end adapted to open to a par# tial vacuum in said bucket and closeL to pressure therein, and means including a reciprocating' EDWARD F. WESTALL. 

